Watlow EZ-ZONE RMC - Manual (Page 229)

Watlow EZ-ZONE ® RMC Module • 226 • Chapter 8 Appendix
Output Hardware
• Switched dc:
- Max. 32VÎ (dc) open circuit
- Max. current 30mA per single output
- Max. current 40mA per paired outputs (1 & 2, 3 & 4, 5 & 6, 7
& 8)
Output Hardware (cont.)
• Open Collector
- Max. 30VÎ (dc) @ 100mA max. current sink
• Solid state relay (SSR), Form A, 1A at 10°C, derated to 0.5A at
65°C @ 24VÅ (ac) min., 264VÅ (ac) max., opto-isolated, without
contact suppression
• Electromechanical relay, Form C, 5A, 24 to 240VÅ (ac) or 30VÎ
(dc) max., resistive load, 100,000 cycles at rated load. Requires a
min. load of 20mA at 24V. 125VA pilot duty
• Electromechanical relay, Form A, 5A, 24 to 240VÅ (ac) or 30VÎ
(dc) max., resistive load, 100,000 cycles at rated load. Requires a
min. load of 20mA at 24V, 125VA pilot duty
• NO-ARC relay, Form A, 15A @ 50°C derated to 10A @ 65°C; 85
to 264VÅ (ac), no VÎ (dc), resistive load, 2 million cycles at rated
load
• Universal process/retransmit, output range selectable:
• Digital outputs
- Update rate 10Hz
- Switched DC
- Output voltage 20VÎ (dc) or 12VÎ (dc), user selectable
- Max. supply current source 40mA at 20VÎ (dc) and 80mA at
12VÎ (dc)
- Open Collector
- Switched voltage max.: 32VÎ (dc)
- Max. switched current per output: 1.5A
- Max. switched current for all 6 outputs combined: 8A
• Universal process/retransmit, Output range selectable:
- 0 to 10V Î(dc) into a min. 1,000Ω load
- 0 to 20mA into max. 800Ω load
Resolution
- dc ranges: 2.5mV nominal
- mA ranges: 5 µA nominal
Calibration Accuracy
- dc ranges: ±15 mV
- mA ranges: ±30 µA
Temperature Stability
- 100 ppm/°C
Programmable Application Blocks
Actions (events) 8 total
Alarms 8 total
Control Loop 4 total
Compare 4 total
Off, greater than, less than, equal, not equal, greater than or
equal, less than or equal
Counters 4 total
Counts up or down loads, predetermined value on load signal.
Output is active when count value equals predetermined target
value
Logic 4 total
Off, and, nand, or, nor, equal, not equal, Latch
Linearization 4 total
Interpolated or stepped relationship
Math 8 total
Off, average, process scale, deviation scale, differential (subtrac-
tion), ratio (divide), add, multiply, absolute difference, min.,
max., square root, sample and hold
Process Value 4 total
Off, sensor backup, average, crossover, wet/dry bulb, switch over,
differential (subtraction), ratio (divide), add, multiply, absolute
difference, min., max., square root
Special Output Function 4 total
Compressor turns on-off compressor for one or two loops (cool
and dehumidify with single compressor)
Motorized Valve turns on-off motor open/closed outputs to cause
valve to represent desired power level
Sequencer turns on-off up to four outputs to distribute a single
power across all outputs with linear and progressive load wear-
ing
Timers 4 total
On Pulse produces output of fixed time on active edge of timer
run signal
Delay output is a delayed start of timer run, off at same time
One Shot oven timer
Retentive measures timer run signal, output on when accumu-
lated time exceeds target
Variable 8 total
User value for digital or analog variable